NOTES: Hobbs, Robert. Robert Smithson: Sculpture. New York, NY: Smithmark Pub, 1981. Print.

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-divided his work into two categories: ‘sites’ and ‘non-sites’
-sites= land art built on site, in nature
-non-sites= natural materials (ie rocks, dirt, sand) taken from nature and brought indoors to a museum, often combined with mirrors
-concept first presented in Artforum in Sept 1968, "A Sedimentation of the Mind: Earth Projects"
- 1972, in a footnote to “The Spiral Jetty,” Smithson listed properties associated with the two states:
SITE:
1. Open Limits
2. A Series of Points
3. Outer Coordinates
4. Subtraction
5. Indeterminate Certainty
6. Scattered Information
7. Reflection
8. Edge
9. Some Place (physical)
10. Many
NONSITE:
Closed Limits
An Array of Matter
Inner Coordinates
Addition
Determinate Uncertainty
Contained Information
Mirror
Center
No Place (abstract)
One
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